Polyxena in Wikipedia

In Greek mythology, Polyxena (pronounced /pəˈlɪksɨnə/), Greek Πολυξένη, was the youngest daughter of King Priam of Troy and his queen, Hecuba.[1] She is considered the Trojan version of Iphigenia, daughter of Agamemnon and Clytemnestra. Polyxena is not in Homer's Iliad, appearing in works by later poets, perhaps to add romance to Homer's austere tale. An oracle prophesied that Troy would not be defeated if Polyxena's brother, Prince Troilus, reached the age of twenty. During the Trojan War, Polyxena and Troilus were ambushed when they were attempting to fetch water from a fountain, and Troilus was killed by the Greek warrior Achilles, who soon became interested in the quiet sagacity of Polyxena...